After struggling with 17 in my final set on Monday I did not expect to make 20 in the last set today, but I just made it! That's 4 more than my exhaustion test before week 1 so it's looking hopeful that I've made some progress. Test tomorrow evening will tell.

I dropped the car at the garage this morning and ran home (only 10 mins or so) and I wonder whether that was responsible for getting my circulation going better today. I have been warming up a bit previously but maybe I should do so more in future.

Well done on completing week 2 that's great, I'm sure you'll be able to do the 20 push-ups, I didn't think I would be able to do 10 yesterday but I did and I know you can do to but don't try and push yourself if you think it will hurt you, or you could always take a couple seconds pause in between the push-ups during your last set that's what I do, if I struggle and it's not cheating because you've just paused for 1/2 seconds

I don't do a warm up, it really depends on the individual some prefer to do a warm up and cool down for other people it could hinder there push-ups,